Home / 20,298.49-28,014.98-12,339.17

Finding the Fourth Proportional to 20,298.49, 28,014.98 and 12,339.17

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Solution

The fourth proportional to 20,298.49, 28,014.98 and 12,339.17 is: 17,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.49 : 28,014.98 = 12,339.17 : x
  2. Step 2: Convert to fraction form
    20,298.49/28,014.98 = 12,339.17/x
  3. Step 3: Cross multiply
    20,298.49x = 28,014.98 × 12,339.17
  4. Step 4: Simplify right side
    20,298.49x = 345,681,600.77
  5. Step 5: Solve for x
    x = 345,681,600.77/20,298.49
  6. Step 6: Final answer
    x = 17,029.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.